Which among the following is used to generate light, to weld metals?
A) Ethylene B) Acetylene C) Glycol D) Oxalic acid
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Answer:
b is the answer
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Explanation:
One common form of welding involves using an oxyacetylene gas torch, which makes an intense flame by burning acetylene (an energy-rich fuel made from a simple hydrocarbon molecule) in a rich supply of oxygen
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